(a)

Check the air-conditioning control module power supply
circuit and ground circuit.

(b)

Confirm that the air-conditioning control module power
supply circuit and ground circuit are normal.

Is air-conditioning clutch working properly?

Yes

System normal

No

Step 14

Replace the air-conditioning control module.

(a)

Replace the air-conditioning control module. Refer to

8.2.8.1

 

Air-conditioning Control Panel Replacement

.

Confirm the repair completed.

Next

Step 15

System normal.

8.2.7.7 Air-conditioning Blower Inoperative

Schematic:

Refer to 

8.2.6.2

 

Air-conditioning System Circuit Schematic

Diagnostic Steps:

Step 1

Check air-conditioning system failure codes DTC.

(a)

Connect scan tool, read air-conditioning system related to
DTC codes.

(b)

Clear DTC.

Is blower working properly?

Yes

System normal

No

Step 2

Check blower relay L.

(a)

Repair according to the fault symptom table.

Symptoms

Suspected Faulty

Components

Repair Procedure

Blower relay
terminal No. 30
has no battery
voltage

1. Fuse EF26 (40A)

Blown

2. Harness

Malfunction

1. Repair the

harness.

2. Replace the fuse

EF26.

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-31

Symptoms

Suspected Faulty

Components

Repair Procedure

Blower relay
terminal No.85
has no battery
voltage

1. Fuse IF25 (10 A)

Blown

2. Harness

Malfunction

1. Repair the

harness.

2. Replace the fuse

IF25.

Blower assembly
IP45-2 has no
battery voltage

1. Blower Relay

Malfunction

2. Harness

Malfunction

1. Replace the

blower relay.

2. Repair the

harness.

Blower relay
terminal No.86
poor connection to
ground

1. Harness

Malfunction

2. Ground G3

Malfunction

1. Repair the

harness.

2. Repair ground G3

poor connection.

Blower relay
terminal No. 86
and No. 85
between the
resistance does
not meet the
standard

Blower relay
Malfunction.

Replace the blower
relay.

(b)

Confirm the repair completed.

Is blower working properly

Yes

System normal

No

Step 3

Check the air-conditioning control module terminal IP40-7 voltage.

16
32

15
31

14
30

13
29

12
28

11
27

10
26

9

25

8

24

7

23

6

22

5

21

4

20

3

19

2

18

1

17

A/C Control Module Harness Connector IP40

FE08-5113b

(a)

Start the engine.

(b)

Adjust the air-conditioning air flow knob on the control panel.

(c)

Measure air-conditioning control module terminal IP40-7
voltage with a multimeter.

(d)

Each air flow speed voltage standard values are as shown.

Air Low

Blower

Blower Terminal Voltage

0

0

0

1

1

4.4 ± 0.3

2

2

5.1 ± 0.3

3

3

6.7 ± 0.3

4

4

8.2 ± 0.3

8-32

Automatic Air-conditioning

Heating, Ventilation and A/C System

5

5

9.9 ± 0.3

6

6

11.7 ± 0.3

7

7

13.1 ± 0.3

Are the voltages specified values?

Yes

System normal

No

Step 4

Check the air-conditioning control module circuit.

(a)

Check the air-conditioning control module power supply
circuit and ground circuit.

(b)

Confirm that the air-conditioning control module power
supply circuit and ground circuit are normal.

Is the blower working properly?

Yes

System normal

No

Step 5

Replace the air-conditioning control module.

(a)

Replace the air-conditioning control module. Refer to

8.2.8.1

 

Air-conditioning Control Panel Replacement

.

Is the blower working properly?

Yes

System normal

No

Step 6

Measure the blower assembly plug terminal IP45-16 voltage.

16
32

15
31

14
30

13
29

12
28

11
27

10
26

9

25

8

24

7

23

6

22

5

21

4

20

3

19

2

18

1

17

1

2

3
9 10 11 1213 14 15 16

4 5

6 7 8

A/C Actuator Harness Connector IP45

A/C Control Module Harness Connector IP40

FE08-5110b

(a)

Start the engine.

(b)

Adjust the air-conditioning air flow knob on the control panel.

(c)

Measure the blower assembly plug terminal IP45-16 voltage
with a multimeter.

Voltage Standard Value: 4.1-13 .4 V

Is the terminal IP45-16 voltage specified value?

Yes

Repair the open circuit between air-
conditioning control module terminal IP40-7
and the blower plug terminal IP45-16
assembly.

No

Step 7

Replace the blower speed control module.

Heating, Ventilation and A/C System

Automatic Air-conditioning

8-33

(a)

Replace the blower speed control module. Refer to

8.2.8.8

 

Blower Speed Control Module Replacement

.

Is the blower working properly?

Yes

System normal

No

Step 8

Repair the blower according to the fault symptom table.

(a)

Repair the blower according to the fault symptom table as
following.

Symptoms

Suspected

Malfunction

Components

Repair Procedure

Blower
catching

1. Blower fan blade

has foreign matter.

2. Blower fan blade

damaged.

3. Blower motor has

foreign matter,
catching.

1. Clean the blower fan

blade foreign matter.

2. Clean the blower fan

blade foreign matter.

3. Replace the blower

motor assembly,
including fan blade.

Blower
motor
inoperative

Blower motor damaged

Replace the blower
motor assembly,
including fan blade.

(b)

Make sure the blower is working correctly.

Confirm the repair completed.

Next

Step 9

System normal.

8-34

Automatic Air-conditioning

Heating, Ventilation and A/C System